JPH06327178A - Electric motor and its assembly method - Google Patents

Abstract

PURPOSE:To reduce the number of processes in a winding-winding process and a winding/winding-end-connecting process for an electric motor. CONSTITUTION:Windings 2 are wound respectively on stator cores 1 which have been split, winding ends 16 are held temporarily by tip recessed parts 11 at protruding parts 10 in the outside-diameter direction of insulators which have been attached to the cores, the divided stator cores are mated, and the temporarily held winding ends are then removed and connected by conductors. The number of processes in a winding-winding process and a winding/winding- end-connecting process for an electric motor can be reduced, and an outer circumferential tape for the stator cores can be abolished.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor stator.

[0002]

2. Description of the Related Art An electric motor in which a rotor is inserted into a stator core around which a stator winding is wound, and a resin is molded around the stator winding and the outer periphery of the stator core is used in applications such as air conditioner ventilation. Has been done. The sectional view is shown in FIG. 1 is a stator core, 2 is a winding, 3 is a rotor, 4 is a shaft, 5 is a bearing,
6 is a bracket, 7 is a resin, and 8 is an insulator.

FIG. 4 shows a divided stator core. 9 is a slot. Conventionally, the stator core 1 previously insulated by the insulator 8 is divided.

FIG. 5 shows a state in which winding is completed on a conventional divided stator core. Reference numeral 15 is a crossover section. The toroidal winding 2 that winds the yoke portion around each slot 9 of the divided stator core 1 is wound around all the yoke portions of each slot 9 of either one of the divided stator cores. After winding 2, all the yoke portions of each slot 9 of the remaining divided stator core were wound. At this time, the winding 2 itself wound around the yoke portion of each slot 9 of the different divided stator core 1 is wound around the yoke portion of each slot 9 of the remaining divided stator core 1. Winding 2 being turned
Is. That is, the winding 2 has no cut portion in the middle of winding.

Next, the divided stator cores are aligned with each other on surfaces A and A and surfaces B and B. Here, the connecting wire portion 15 of the winding wire 2 wound around the divided stator core 1 is formed of an insulating tape or the like, and the outer peripheral surface of the already wound stator core 1 or winding wire 2 is used. It was fixed to.

[0006]

However, in the prior art, the winding 2 itself wound around the yoke portion of each slot 9 of the differently divided stator core remains the other divided stator. It is the winding 2 wound around the yoke portion of each slot 9 of the core 1, and since the winding 2 has no cut portion in the middle of winding, one of the divided stator cores 1
However, it is impossible to wind the winding 2 around the other stator core 1 at the same time, which requires a lot of man-hours for the winding process, which is a problem.

Further, the connecting wire portion 15 of the winding 2 after the stator cores which have already been wound with the winding 2 are joined to the A surface and the A surface, and the B surface and the B surface, An insulating tape or the like is required to fix the outer peripheral surface of the stator core 1 or the winding 2 that has already been wound with an insulating tape or the like, which requires a lot of man-hours in the process of fixing the crossover portion 15. .

The present invention solves the above-mentioned conventional problems. An electric motor capable of reducing man-hours in the winding process and winding / winding end connecting process of the electric motor and eliminating the stator outer peripheral tape, and a manufacturing method thereof. The purpose is to provide.

[0009]

SUMMARY OF THE INVENTION To achieve this object, the present invention has a structure in which a winding is wound around each of the divided stator cores, and the winding ends are insulators attached to the cores in a motor manufacturing process. Temporarily hold a part of the stator core, and then combine the stator cores that have been divided, and then remove the winding end that was temporarily held on a part of the insulator attached to the core, and remove the temporarily held insulation part. It is connected by a conductor such as a printed circuit board.

The conductor such as the printed circuit board is supported by using a part of the insulator attached to the core.

[0011]

With the above structure, it is possible to simultaneously wind the winding on one of the divided stator cores and the other divided stator core, and the number of steps of the winding process can be greatly reduced.

Further, since the winding is wound around each of the divided stator cores and the winding ends are temporarily held on a part of the insulator adhered to the core, the transition portion of the winding is eliminated and the transition portion is fixed. Insulation tape for use is no longer necessary, and the number of steps to attach the insulation tape can be eliminated.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show each slot for each slot through an insulator attached to a stator core according to an embodiment of the present invention.
It is a stator of an electric motor having a toroidal winding around which a yoke portion is wound.

In FIG. 1, reference numeral 10 denotes an outer diameter convex portion of an insulator adhered to the stator core, and 11 denotes an outer diameter convex portion 10.
A concave portion provided at the tip of the insulator, 12 an axial convex portion of the insulator, 1
Reference numeral 6 is a winding end, and the other portions are the same as the conventional ones, and the description thereof is omitted.

The winding 2 is wound in a toroidal manner on the yoke portion of each slot in which an insulator is attached to the stator core 1. After winding the winding wire 2 around the yoke portions of all the slots, the winding ends 16 are formed on the outer radial projections 10 (not shown in FIG. 2) of the insulator attached to the stator core 1. Temporarily hold.
At this time, the winding end 16 is attached to the tip of the convex portion 10 in the outer diameter direction.
A recess 11 is provided so that the winding end 1 can be inserted.
6 can be easily sandwiched and temporarily held.

The above-described operation can be performed at the same time for the other split stator core 1.

In FIG. 2, 14 is a conductive portion, 17 is a conductor, and 13 is a hole. The stator cores that have been divided are combined with the A surface and the A surface, and the B surface and the B surface, and each winding end 16
The conductor 17 such as a printed circuit board is installed so as to extend across the joint surface (in FIG. 1, the joint surface between the B surface and the B surface) closest to the tentatively held outer diameter convex portion 10. At that time, the conductor 1
A hole 13 is provided in a part of 7 and is fitted into and fixed to the axial convex portion 12 of the insulator attached to the stator core 1.

Next, each winding end 16 temporarily held by the convex portion 10 in the outer diameter direction is fixed to the conductive portion 14 of the conductor 17, and is electrically connected by soldering or the like. Finally, the convex portion 10 in the outer diameter direction is cut from the vicinity of the outer peripheral portion of the insulator as shown in FIG. In addition, a part of the insulator used for temporary holding is also removed. It goes without saying that the removal can be performed at any time even during the process if temporary holding is not necessary.

[0020]

According to the present invention, it is possible to simultaneously wind the winding on one of the divided stator cores and the other divided stator core, and the number of steps of the winding process can be greatly reduced.

Further, the winding is wound around each of the divided stator cores, and the winding ends are temporarily held on a part of the insulator adhered to the core, so that there is no connecting portion of the winding and the connecting portion is eliminated. No need for fixing insulating tape, etc., and the man-hours can be greatly reduced, and the effect is extremely large.

[Brief description of drawings]

FIG. 1 is a perspective view of a divided stator core provided with windings of an electric motor according to an embodiment of the present invention.

FIG. 2 is a perspective view of a stator having windings of an electric motor according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view of a general electric motor

FIG. 4 is a perspective view of a divided stator core.

FIG. 5 is a perspective view of completion of winding of a conventional divided stator core.

[Explanation of symbols]

 1 Stator core 2 Winding 3 Rotor 4 Shaft 5 Bearing 6 Bracket 7 Resin 8 Insulator 9 Slot 10 Outer radial convex portion 11 Recessed portion 12 Axial convex portion 13 Hole 14 Conductive portion 15 Crossover portion 16 Winding Edge 17 conductor

Claims (3)

[Claims] 1. A split core having a plurality of slots each having an inner peripheral portion separated by a tooth portion, wherein an inner periphery of the yoke portion is provided through an insulator provided in the yoke portion of the slot of the core. An electric motor having a split core in which a winding is wound around the outer circumference, wherein a part of the winding wound around the split core is connected by a conductor. 2. The electric motor according to claim 1, wherein a part of an insulator provided in the split core supports the conductor. 3. A split core having a plurality of slots each having an inner peripheral portion separated by a tooth portion, wherein an inner periphery of the yoke portion is provided via an insulator provided in the yoke portion of the slot of the core. In a motor having a split core in which a winding is wound on the outer periphery of the winding core, a temporary holding portion for temporarily holding the winding end is provided on a part of the insulator provided on the split core, and after assembling the winding. ,
A method for assembling an electric motor, wherein the temporary holding portion is removed.